Final answer:
The FTC requires supply companies to ship merchandise within 30 days or offer the option to cancel with a full refund. This rule ensures consumer protection and fairness in transactions.
Step-by-step explanation:
The Federal Trade Commission (FTC) has specific regulations regarding the shipment of merchandise. According to the question, a supply company is required to provide merchandise within a certain time frame or offer the customer the option to cancel the order with a full refund. The correct answer is: A. 30 days. This means that if a company is unable to fulfill an order and ship the merchandise to a customer within 30 days, they must give the customer the option to either agree to a delay or to cancel the order for a full refund. This is part of the FTC's Mail, Internet, or Telephone Order Merchandise Rule, which is designed to protect consumers from undue delays and ensures fairness in transactions.